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Trojan.ALS.BURSTED.MJWP

March 06, 2019
 Analysis by: Maureen Reyes
 ALIASES:

Worm:ALisp/Copicad.gen!A (Microsoft), ALS/Bursted.X (ESET-NOD32), Virus.Acad.Pasdoc.ad (Kaspersky)

 PLATFORM:

Windows

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:
 SYSTEM IMPACT RATING:
 INFORMATION EXPOSURE:

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW


This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

It requires its main component to successfully perform its intended routine.

  TECHNICAL DETAILS

File Size:

37,623 bytes

File Type:

LSP

Memory Resident:

No

Initial Samples Received Date:

09 Jul 2018

Arrival Details

This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Other Details

This Trojan requires its main component to successfully perform its intended routine.

NOTES:

This malware arrives to the system as an AutoLISP script bundled with a .DWG drawing file. Once the drawing file is opened, AutoCAD then loads and executes this malware.

It first searches for the file BASE.DCL and looks for ACADDOC.LSP in the same folder where BASE.DCL is located. It also searches for the file ACADDOC.LSP from where the current drawing file is saved. If found, it copies the content of the file to the folder where BASE.DCL is located.

  SOLUTION

Minimum Scan Engine:

9.850

FIRST VSAPI PATTERN FILE:

14.852.05

FIRST VSAPI PATTERN DATE:

05 Mar 2019

VSAPI OPR PATTERN File:

14.853.00

VSAPI OPR PATTERN Date:

06 Mar 2019

Step 1

Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.

Step 2

Scan your computer with your Trend Micro product to delete files detected as Trojan.ALS.BURSTED.MJWP. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check the following Trend Micro Support pages for more information:


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